Here is an example of configuring PIM on two MikroTik routers:
Let us configure the first MikroTik.
Add a pim interface and check:
routing pim interface add routing pim interface p
Add the IP address of RP (this MikroTik):
routing pim rp add address=IP-ADDRESS
Let’s specify from which IP multicast traffic is allowed:
routing pim interface set alternative-subnets=238.0.0.0/24,239.0.0.0/24
Let’s configure the second MikroTik.
Add a pim interface to the uplink WAN port, I have ether1:
routing pim interface add interface=ether1 routing pim interface p
Add the IP address of the RP (the first MikroTik):
routing pim rp add address=IP-АДРЕС
Let’s specify the route of the multicast source: (first MikroTik):
ip route add 239.0.0.0/24 via IP-АДРЕС
Done.